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FI
SYSTEM
DIAGNOSIS
Step 2
1) Turn the ignition switch ON.
2) Measure the injector voltage between Y/R wire and ground.
_ Injector voltage: Battery voltage
(cB
VIR
- 8 Ground)
NOTE:
Injector voltage can be detected only
3 seconds after ignition
switch is turned ON.
,mob
09900-25008: Multi circuit tester set
~
Tester knob indication: Voltage
(::-:-::)
Is the voltage OK?
• GrlW, Gr/B, Gr/Y, Gr/R or Y/R wire open or
shorted to ground, or poor
@, @, @, ([) or @
connection.
YES
•
If wire and connection are OK, intermittent trou-
ble or faulty ECM.
•
Recheck each terminal and wire harness for
open circuit and poor connection.
NO
Open circuit in the Y/R wire.
ECM couplers